TAKRON Coil
[Properties]
Toho Zinc has the No. 1 dust core coils in the world. It is made with highly pure electrolytic iron (Miron) as the base material through integrated production. These electronic parts can be made by environment-friendly methods which support high efficiency, compactness and lightness of the electronic parts and contribute to energy conservation.
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HK Coil Series
HK coil series is an alloy-based dust choke that we can confidently recommend. The starting material for this product is the high purity electrolytic iron "micron" which has the largest market share in the world, and through alloy manufacture, disintegration, core formation, and bending, start to finish production is performed.
These cater to your needs in terms of cost, function and quality by variation of a wide range of reliable high performance products. These include SMD type high power configurations such as the toroidal type and HKBS formed form standard HK material in which direct current bias is improved, as well HKL,HKS and HKH material which has excellent core loss properties.
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HM Coil Series
By using amorphous dust material which has the lowest core loss of metal materials, lower level of loss and higher efficiency is realized.
Because heat generated due to core loss is low and weigh characteristic are excellent, a core that is one size smaller becomes possible. Aside from these products, SK coils (pure iron dust choke), FK coil (common mode choke-coil), high frequency transducers, noise filters etc are also available.
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Micrometals
[Properties]
Micrometals are manufactured by Micrometal, Inc. of the U.S.A. As specialized dust core manufacturers, they carry a wide variety of materials and configurations.
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Power source and high frequency dust cores
| Dust core has been used for a long time as the material for high frequency cores, but the properties of the tiny gaps that are distributed through the pore can be used for materials that are very suitable as DC power source chokes or as filters for motors or dimmers and for other EMI/RF applications. |
[Material Properties Comparison]
| General Material Properties for RF Materials |
Material
Mix No. |
Basic Iron Powder |
Material
Permeability
(µ°) |
Temperature1
Stability
(ppm /°C) |
Relative
Cost |
Toroidal Color Code |
| -1 |
Carbonyl C |
20 |
280 |
2.7 |
Blue/Clear |
| -2 |
Carbonyl E |
10 |
95 |
1.7 |
Red/Clear |
| -3 |
Carbonyl HP |
35 |
370 |
2.5 |
Gray/Clear |
| -4 |
Carbonyl J |
9 |
280 |
2 |
Blue/White |
| -6 |
Carbonyl SF |
8.5 |
35 |
2 |
Yellow/Clear |
| -7 |
Carbonyl TH |
9 |
30 |
2 |
White/Clear |
| -8 |
Carbonyl GQ4 |
35 |
255 |
2.5 |
Orange/Clear |
| -10 |
Carbonyl W |
6 |
150 |
4.7 |
Black/Clear |
| -12* |
Carbonyl Oxide |
4 |
170** |
1.5 |
Green/White |
| -15 |
Carbonyl GS6 |
25 |
190 |
3.1 |
Red/White |
| -17 |
Carbonyl |
4 |
50 |
3.1 |
Blue/Yellow |
| -42 |
Hydrogen Reduced |
40 |
550 |
1.4 |
Blue/Red |
| 0 |
Phenolic |
1 |
0 |
1 |
Tan/Tan |
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| 1 Temperature stability values, averaged from -55C° to +125C° are listed for closed magnet structures. |
| *Non-linear |
| **Mix 17 was developed as a temperature stable alternative to mix 12 and is recommended for all new designs. |
| Note: For information an Mix #'s 8, 18, 26, 28, 33, 40 and 52 see Micrometals Catalog 4 for Power Conversion and Line Filter Applications. |
[Range of Frequency Used]
Resonant Circuit1 ( ) and Broadband Frequency Range ( ) |
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| Mix No. |
Range MHz |
2KHz
to
50KHz |
50KHz
to
250KHz |
250KHz
to
500KHz |
500KHz
to
2MHz |
2MHz
to
10MHz |
10MHz
to
40MHz |
40MHz
to
150MHz |
150MHz
to
250MHz |
250MHz
to
500MHz |
500MHz
to
1GHz |
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| 42 |
0.3-80 |
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| 3 |
.02-1 |
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| 8 |
.02-1 |
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| 1 |
.15-3 |
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| 15 |
.15-3 |
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| 2 |
.25-10 |
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| 7 |
.1-25 |
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| 4 |
3-40 |
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| 6 |
3-40 |
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| 10 |
15-100 |
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| 17 |
20-200 |
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| 12 |
30-250 |
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| 0 |
50-350 |
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| *Resonant frequency range is given to optimize Q and core loss. |
| Materials can be used outside resonant frequency range where optimum Q is not required. |
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High Temperature Dust Core
The core material uses a magnetic alloy which can function in temperature increases of up to 200°C. This is suitable for use in the extreme temperature conditions required by the automobile industry such as inside motor vehicle bonnets. There are two types which are material 60 and material 70 which we have processed to HC/IC core with is toroidal and E-core geometric configurations. |
[Material Properties Comparison]
| CORE LOSS COMPARISON (mW/cm3) |
| Material |
60 Hz |
1KHz |
10KHz |
50KHz |
100KHz |
500KHz |
1 MHz |
| Mix No. |
@5000G |
@1500G |
@500G |
@225G |
@140G |
@50G |
@40G |
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| -60 |
40.3 |
71.5 |
75.7 |
70.2 |
51.6 |
38.2 |
68.2 |
| -61 |
80.3 |
117.7 |
112.5 |
97.4 |
68.5 |
43.4 |
71.6 |
| -70* |
5.8 |
9 |
9.6 |
12.5 |
13 |
28.2 |
69.5 |
| 0 |
5.3 |
6.3 |
6.2 |
10.4 |
12.7 |
34 |
85.8 |
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| PERMEABILITY WITH DC BIAS |
| HDC=50 Oersteds |
| % µo |
µµeffective |
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| 74 |
40.6 |
| 87 |
30.5 |
| 50 |
49.5 |
| 46 |
57.5 |
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